A high frequency sample fusion machine

Abstract

The utility model belongs to the field of heating equipment, disclose a kind of high-frequency sample melting machine, including rack body, the sample melting chamber being arranged in rack body interior, and the swing heating assembly being arranged in sample melting chamber, swing heating assembly includes drive device, swing shaft is swung by drive device and is driven to be shaken uniformly, at least one inductive heating bracket is fixed on swing shaft, inductive heating bracket includes the coil for carrying molten crucible and can be inducted to the coil of molten crucible and carry out induction heating;Forming assembly is located below swing heating assembly swing path, for receiving molten sample poured out from the molten crucible and making it form;Positioning temperature measuring device is arranged on the bracket below inductive heating bracket;Directional cooling device is arranged below forming assembly, and air extraction device is arranged on the top of rack body, the utility model is integrated inductive heating bracket, servo precision swing system, higher integration, more accurate control, higher energy efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of heating equipment technology, specifically relating to a high-frequency melting sample machine. Background Technology

[0002] High-frequency melting machines are key equipment in laboratories of industries such as metallurgy, mining, and building materials for glass fusing sample preparation. They use high temperatures to melt the sample and flux into a homogeneous glass, eliminating mineral and matrix effects and improving the accuracy of XRF analysis.

[0003] Existing technologies, such as patent application CN120427357A, disclose a multi-station, multi-functional high-frequency melting sample machine, which adopts a multi-station design, a swinging and spinning mechanism, and improves the degree of automation. However, its heating method uses an externally wound high-frequency heating tube, which has room for improvement in thermal efficiency and heating uniformity of the crucible; its swing drive uses a combination of a common motor and encoder, which makes it difficult to achieve the most complex swinging modes in terms of control accuracy and response speed; its cooling method is water cooling of the entire machine casing, which is not direct and efficient enough for cooling the molded sample; and its exhaust uses a top-mounted integrated exhaust hood, which is not efficient enough in collecting waste gas generated during melting and pouring.

[0004] Furthermore, other existing melting machine brackets are mostly just mechanical supports, with heating and support separated; the swinging mechanism is simple and lacks precision; and there is a lack of targeted cooling and fume extraction design. This can lead to problems such as uneven heating, insufficient mixing during swinging, cooling rate affecting sample quality, and exhaust gas overflow affecting equipment lifespan and the environment during the melting process.

[0005] Therefore, there is an urgent need in this field for a high-frequency melting machine with higher integration, more precise control, higher energy efficiency, and better finished product quality. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides a method that integrates an induction heating bracket, a servo precision swing system, and a targeted cooling and exhaust structure to achieve efficient and uniform heating, thorough swing mixing, rapid and directional cooling, and effective waste gas collection, ultimately producing a uniform, bubble-free, high-quality glass sheet.

[0007] This utility model provides a high-frequency melting sample machine, including a frame body, a melting sample chamber disposed inside the frame body, and a swing heating assembly disposed inside the melting sample chamber. The swing heating assembly includes a driving device, a swing shaft driven by the driving device for swinging and oscillating, and at least one induction heating bracket fixed to the swing shaft. The induction heating bracket includes a coil for supporting a molten crucible and for induction heating the molten crucible. A forming assembly is located below the swing path of the swing heating assembly and is used to receive the molten sample poured from the molten crucible and form it. It also includes a positioning temperature measuring device disposed on a support below the induction heating bracket. A directional cooling device is disposed below the forming assembly and connected to a cold air vent disposed below the forming assembly. An exhaust device is disposed at the top of the frame body and connected to an exhaust vent disposed above the molten crucible. The driving device, induction heating bracket, directional cooling device, positioning temperature measuring device, and exhaust device are communicatively connected to a control system for coordinated control of the entire process of melting, oscillating, pouring, cooling, and exhaust gas treatment.

[0008] Specifically, the oscillating heating assembly is mounted on the base plate of the frame body via a fixed base. The driving device includes a servo geared motor and an angle detection assembly. The driving device is either a servo geared motor or a stepper geared motor. The servo geared motor or stepper geared motor is fixedly mounted on the left side of the fixed base via a motor mounting plate. The output shaft of the servo geared motor is connected to the input shaft of the bevel gear rotary table via a coupling. The output shaft of the bevel gear rotary table is connected to the oscillating shaft. One end of the oscillating shaft is fixedly mounted on a rotating insulating plate, which passes through a circular hole on the first shelf of the frame. The other end is mounted in a bearing seat hole on a proximity switch mounting base via a support bearing. The proximity switch mounting base is located behind the motor mounting plate and is fixed to the fixed base with bolts. The angle detection assembly includes a limit ring, an oscillating water cable fixing plate, and an oscillating sensing plate, which are sequentially fitted onto the oscillating shaft. The oscillating sensing plate is fixedly mounted on the oscillating shaft and is equipped with at least one proximity switch for detecting the rotation angle of the oscillating shaft.

[0009] Specifically, the proximity switch is mounted on the side plate of the proximity switch mounting base. A bearing seat hole is provided at the upper part of the side plate, and three oblong holes are arranged circumferentially around the bearing seat hole to adjust and limit the circumferential position of the proximity switch to limit its sensing range. There are three proximity switches: a middle proximity switch, a right proximity switch, and a left proximity switch, used to achieve origin positioning, positive limit, and negative limit of the swing shaft. Origin positioning is used to determine the initial position of the swing shaft. When the swing sensor triggers the middle proximity switch, the control system considers the swing shaft to have returned to the center position, which can be used to stop the movement or as the next... The starting point of each swing cycle is determined by a positive limit switch, which detects the maximum rightward swing angle of the swing axis. When the swing axis swings to the right, the swing sensor first triggers the right-side proximity switch. After receiving the signal, the control system controls the servo geared motor to move in the opposite direction, causing the swing axis to return to the center from the right. The negative limit switch detects the maximum leftward swing angle of the swing axis. When the swing axis swings to the left, the swing sensor first triggers the left-side proximity switch. After receiving the signal, the control system controls the servo geared motor to move in the opposite direction, causing the swing axis to return to the center from the left. The swing angle can be precisely controlled and has an automatic centering function, ensuring that the swing range is controllable, repeatable, and automatically reset.

[0010] Specifically, the induction heating bracket is connected to the swing shaft via a rotating insulating plate. The coil body is in the shape of a planar spiral and is used to support the molten crucible. The molten crucible is placed inside the molten crucible. The connecting legs of the coil pass through the rotating insulating plate via a connecting joint, and are connected to an external high-frequency power supply and cooling water source via a water cable fixing seat and a rotating joint.

[0011] Specifically, the molding assembly is fixedly mounted on the first frame shelf by a rectangular fixing plate. It includes a molding coil, a molding crucible holder wrapped around the molding coil, and a molding crucible inside the molding crucible holder. The molding coil has the same structure as the coil, but the outer diameter of the molding coil is smaller than the bottom outer diameter of the molding crucible holder. This allows the inner wall of the molding crucible holder to form an interference fit with the outer periphery of the molding coil when the molding crucible holder is fitted over the outside of the molding coil. The radial elastic force of the molding coil secures the molding crucible holder. The molding coil is suspended in front of the first frame shelf. Its connecting legs pass through the fixing plate and extend backward through the connecting joint. They are connected to an external high-frequency power supply and cooling water source via a water cable fixing seat on the second frame shelf, allowing cooling water to flow inside the molding coil. At the same time, the current generates an alternating magnetic field through the coil.

[0012] Specifically, the melting crucible has two layers of edges, and transverse protrusions are provided on the left and right side walls of the melting crucible. The edges and inner walls of the matching melting crucible support are cut with two symmetrical grooves. The transverse protrusions and grooves work together to restrict the circumferential rotation of the melting crucible within the melting crucible support.

[0013] Specifically, the directional cooling device includes a fan and an air duct. The air outlet of the air duct is equipped with a funnel-shaped air collecting hood to concentrate the cooling airflow to rapidly cool the forming crucible.

[0014] Specifically, the exhaust device includes an air collection pipe and a centrifugal fan. One end of the air collection pipe is connected to the exhaust port, and the other end is connected to the centrifugal fan installed on the upper part of the frame body.

[0015] Specifically, it also includes a display screen, a water-cooled box, and a power distribution cabinet. The display screen is located in front of the exhaust device, with a partition between it and the exhaust device. The water-cooled box and the power distribution cabinet are located on both sides of the rack body.

[0016] The beneficial effects of this utility model are as follows:

[0017] 1. Highly efficient and uniform heating: The induction heating rack directly heats the crucible, resulting in high thermal efficiency, low energy loss, and extremely uniform heating of the sample, effectively preventing local overheating or splashing.

[0018] 2. Excellent mixing effect: The servo geared motor, combined with the high-precision angle feedback system, can realize precise, complex and repeatable oscillation modes, ensuring that the sample and flux are fully mixed, greatly eliminating air bubbles and unmelted materials, and improving the uniformity and consistency of the sample.

[0019] 3. Rapid and efficient cooling: The flared air collector blows cooling air in a directional and concentrated manner onto the sample, resulting in rapid and uniform cooling. This is beneficial for forming high-quality glass slides with low internal stress and a smooth surface, thus shortening the sample preparation cycle.

[0020] 4. Environmentally friendly and safe: Independent exhaust vents enable efficient collection of exhaust gases at the source, greatly improving the working environment for operators, reducing the corrosion of internal components by exhaust gases, and improving equipment lifespan and safety.

[0021] 5. High degree of automation and intelligence: Infrared temperature measurement and precision swing control are both integrated and managed by the control system. Multiple melting programs can be set and stored according to different samples, realizing fully automatic, one-click operation, with good repeatability of results, reducing the difficulty of operation and dependence on personnel experience.

[0022] 6. Compact structure and high integration: The "water and electricity integrated" coil design and modular structure simplify the layout of external pipelines, avoid interference during operation, and make the equipment structure more compact and the operation more reliable. Attached Figure Description

[0023] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0024] Figure 2 This is the front view of the present invention;

[0025] Figure 3 This is a cross-sectional view (AA) of the present invention;

[0026] Figure 4 This is a schematic diagram of the swing heating component of this utility model;

[0027] Figure 5 This is a schematic diagram of the molding component of this utility model;

[0028] Figure 6 This is a schematic diagram of the melting crucible support of this utility model;

[0029] Figure 7 This is a schematic diagram of the melting crucible of this utility model;

[0030] Markings in the diagram: 1. Frame body; 101. Frame shelf one; 102. Frame shelf two; 2. Melting chamber; 3. Swing heating assembly; 4. Drive unit; 41. Servo geared motor; 42. Angle detection assembly; 43. Bevel gear rotary table; 44. Rotating insulating plate; 401. Swing shaft; 402. Motor mounting plate; 403. Fixed base; 404. Limiting ring; 405. Swing water cable fixing plate; 406. Swing sensing plate; 407. Proximity switch; 408. Proximity switch mounting base; 409. Waist-shaped hole; 410. Water cable fixing base; 5. Induction heating tray 501. Frame; 502. Molding crucible; 503. Molding crucible support; 504. Connecting leg; 505. Connecting joint; 506. Lateral protrusion; 507. Groove; 6. Molding component; 601. Fixing plate; 602. Molding coil; 603. Molding crucible support; 604. Molding crucible; 7. Positioning temperature measuring device; 8. Support; 9. Directional cooling device; 901. Fan; 902. Air duct; 903. Air collection hood; 10. Exhaust device; 1001. Air collection pipe; 1002. Centrifugal fan; 1003. Exhaust port; 11. Display screen; 12. Power distribution cabinet. Detailed Implementation

[0031] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0032] like Figure 1-3As shown, a high-frequency melting sample machine includes a frame body 1, a melting chamber 2 disposed inside the frame body 1, and a swing heating assembly 3 disposed inside the melting chamber 2. The swing heating assembly 3 includes a driving device 4, a swing shaft 401 driven by the driving device 4 for swinging and oscillating, and at least one induction heating bracket 5 fixed to the swing shaft 401. The induction heating bracket 5 includes a coil 502 for supporting a molten crucible 501 and for induction heating the molten crucible 501. A forming assembly 6 is located below the swing path of the swing heating assembly 3 and is used to receive samples poured from the molten crucible 501. The machine includes a pouring and shaping process for the molten sample; a positioning temperature measuring device 7 is mounted on a support 8 below the induction heating bracket 5; a directional cooling device 9 is mounted below the forming component 6 and connected to a cold air vent located below the forming component 6; and an exhaust device 10 is mounted on the top of the frame body 1 and connected to an exhaust vent located above the molten crucible 501. The drive device 4, induction heating bracket 5, directional cooling device 9, positioning temperature measuring device 7, and exhaust device 10 are communicatively connected to the control system for coordinated control of the entire process of sample melting, shaking, pouring, cooling, and exhaust gas treatment.

[0033] like Figure 4 As shown, the swing heating assembly 3 is mounted on the base plate of the frame body 1 via a fixed base 403. The driving device 4 includes a servo geared motor 41 and an angle detection assembly 42. The driving device 4 is either a servo geared motor 41 or a stepper geared motor. The servo geared motor 41 or the stepper geared motor is fixedly mounted on the left side of the fixed base 403 via a motor mounting plate 402. The output shaft of the servo geared motor 41 is connected to the input shaft of the bevel gear rotary table 43 via a coupling. The output shaft of the bevel gear rotary table 43 is connected to the swing shaft 401. One end of the swing shaft 401 is fixedly mounted on a rotating insulating plate 44. The first end of the device passes through a circular hole set in the frame shelf 101, and the second end is installed in a bearing seat hole on the proximity switch mounting base 408 through a support bearing. The proximity switch mounting base 408 is located behind the motor mounting plate 402 and is fixed to the fixed base 403 by bolts. The angle detection component 42 includes a limit retaining ring 404, a swing water cable fixing plate 405, and a swing sensing plate 406, which are sequentially fitted on the swing shaft 401. The swing sensing plate 406 is fixedly installed on the swing shaft 401, and at least one proximity switch 407 is provided in cooperation with the swing sensing plate 406 to detect the rotation angle of the swing shaft 401.

[0034] Preferably, the proximity switch 407 is disposed on the side plate of the proximity switch mounting base 408; the upper part of the side plate of the proximity switch mounting base 408 is provided with a bearing seat hole, and three oblong holes 409 are provided around the upper circumference of the bearing seat hole to adjust and limit the circumferential position of the proximity switch 407 to limit its sensing range. The number of proximity switches 407 is three, namely the middle proximity switch, the right proximity switch, and the left proximity switch, which are used to realize the origin positioning, positive limit and negative limit of the swing shaft 401.

[0035] Preferably, the induction heating bracket 5 is connected to the swing shaft 401 via a rotating insulating plate 44. The coil 502 body is in the shape of a planar spiral and is used to support the melting crucible holder 503. The melting crucible 501 is placed inside the melting crucible holder 503. The connecting leg 504 of the coil 502 passes through the rotating insulating plate 44 via the connecting joint 505, and is connected to the external high-frequency power supply and cooling water source via the water cable fixing seat 410 and the rotating joint.

[0036] like Figure 5 As shown, the molding assembly 6 is fixedly mounted on the frame shelf 101 by a rectangular fixing plate 601. It includes a molding coil 602, a molding crucible holder 603 fitted over the molding coil 602, and a molding crucible 604 disposed inside the molding crucible holder 603. The molding coil 602 has the same structure as the coil 502. The outer diameter of the molding coil 602 is smaller than the bottom outer diameter of the molding crucible holder 603, so that when the molding crucible holder 603 is fitted over the molding coil 602, its inner wall... An interference fit is formed with the outer periphery of the forming coil 602, and the forming crucible support 603 is fastened by the radial elastic force of the forming coil 602. The forming coil 602 is suspended in front of the first frame plate 101. Its connecting leg 504 passes through the fixing plate 601 through the connecting joint 505 and extends backward. It is connected to the external high-frequency power supply and cooling water source through the water cable fixing seat 410 on the second frame plate 102, so that the cooling water can flow inside the forming coil 602. At the same time, the current generates an alternating magnetic field through the coil.

[0037] like Figure 6 , Figure 7 As shown, the melting crucible 501 has two layers of edges. The left and right side walls of the melting crucible 501 are provided with transverse protrusions 506. The edge of the matching melting crucible support 503 and its inner wall are cut with two symmetrical grooves 507. The transverse protrusions 506 and the grooves 507 cooperate to restrict the circumferential rotation of the melting crucible 501 in the melting crucible support 503.

[0038] Preferably, the directional cooling device 9 includes a fan 901 and an air duct 902. The air outlet of the air duct 902 is provided with a funnel-shaped air collector hood 903, which is used to concentrate the cooling airflow to quickly cool the forming crucible 604.

[0039] Preferably, the exhaust device 10 includes an air collection pipe 1001 and a centrifugal fan 1002. One end of the air collection pipe 1001 is connected to the exhaust port 1003, and the other end is connected to the centrifugal fan 1002 installed on the upper part of the frame body 1.

[0040] Preferably, it also includes a display screen 11, a water-cooled box and a power distribution cabinet 12. The display screen 11 is located in front of the exhaust device 10 and is separated from the exhaust device 10. The water-cooled box and the power distribution cabinet 12 are located on both sides of the frame body 1.

[0041] The work steps are as follows:

[0042] Preparation and sample loading: The operator places the sample to be melted and an appropriate amount of flux into the melting crucible 501. Then, the melting crucible 501 containing the sample is placed in the melting crucible holder 503 of the induction heating bracket 5. The lateral protrusion 506 on the melting crucible 501 is used to engage with the groove 507 on the melting crucible holder 503 to position it and prevent it from rotating.

[0043] Initiating the melting and oscillation: The equipment is started via the display screen 11 of the control system. A high-frequency current is passed through the coil 502 of the induction heating bracket 5, which directly heats the molten crucible 501 through the principle of electromagnetic induction. At the same time, the servo reduction motor 41 of the drive device 4 starts working, driving the oscillation shaft 401 to oscillate according to a preset program and mode (such as forward and reverse oscillation, specific angle), which drives the induction heating bracket 5 and the molten crucible 501 to move together, so that the sample and flux are fully shaken and mixed during the heating process.

[0044] Temperature monitoring and process completion: The positioning temperature measuring device 7 monitors the temperature of the melting crucible 501 in real time and feeds the data back to the control system. When the temperature reaches the preset value and is maintained for a certain period of time (i.e., the sample has been completely melted into a homogeneous liquid), the heating stage ends.

[0045] Pouring molten liquid: The control system precisely rotates the drive unit 4, causing the oscillating heating component 3 to swing to a preset pouring angle, pouring the liquid sample in the molten crucible 501 into the forming crucible 604 of the forming component 6 directly below. During this process, the exhaust device 10 automatically starts, efficiently extracting and discharging the harmful fumes generated during pouring through the exhaust port 1003, thus purifying the working environment.

[0046] Directional cooling and forming: After the molten sample is poured into the forming crucible 604, the directional cooling device 9 is automatically activated. The cooling airflow generated by the fan 901 is concentrated and directionally blown onto the forming crucible 604 through the air duct 902 and the air collector hood 903, so that the molten glass liquid in it is rapidly and uniformly cooled and solidified into a glass sheet.

[0047] Sampling: After the cooling process is complete, the control system indicates that the operation is finished. The operator opens the equipment and removes the solidified glass slide sample that meets the analysis requirements from the forming component 6. The entire sample preparation process is now complete.

Claims

1. A high-frequency melting sample machine, comprising a frame body (1), characterized in that: The frame body (1) contains a molten sample chamber (2) and a swing heating assembly (3) within the molten sample chamber (2). The swing heating assembly (3) includes a drive device (4), a swing shaft (401) driven by the drive device (4) to swing and oscillate, and at least one induction heating bracket (5) fixed to the swing shaft (401). The induction heating bracket (5) includes a coil (502) for carrying a molten crucible (501) and for induction heating the molten crucible (501). A forming assembly (6) is located below the swing path of the swing heating assembly (3) and is used to receive the sample from the molten crucible (501). The molten sample poured out of the molten crucible (501) is shaped; it also includes a positioning temperature measuring device (7), which is set on a support (8) below the induction heating bracket (5); a directional cooling device (9) is set below the forming component (6) and connected to a cold air vent set below the forming component (6); an exhaust device (10) is set on the top of the frame body (1) and connected to an exhaust vent set above the molten crucible (501); the drive device (4), the induction heating bracket (5), the directional cooling device (9), the positioning temperature measuring device (7), the exhaust device (10) are communicatively connected to the control system.

2. The high-frequency melting sample machine according to claim 1, characterized in that: The swing heating assembly (3) is mounted on the base plate of the frame body (1) via a fixed base (403). The driving device (4) includes a servo geared motor (41) and an angle detection assembly (42). The driving device (4) is either a servo geared motor (41) or a stepper geared motor. The servo geared motor (41) or the stepper geared motor is fixedly mounted on the left side of the fixed base (403) via a motor mounting plate (402). The output shaft of the servo geared motor (41) is connected to the input shaft of the bevel gear rotary table (43) via a coupling. The output shaft of the bevel gear rotary table (43) is connected to the swing shaft (401). One end of the swing shaft (401) is fixedly mounted on the rotating insulating plate (44). The flange (44) passes through the round hole on the first (101) of the frame, and the other end is installed in the bearing seat hole on the proximity switch mounting base (408) through the support bearing. The proximity switch mounting base (408) is located behind the motor mounting plate (402) and is fixed to the fixed base (403) by bolts. The angle detection component (42) includes a limit ring (404), a swing water cable fixing plate (405), and a swing sensing plate (406) that are sequentially fitted on the swing shaft (401). The swing sensing plate (406) is fixedly installed on the swing shaft (401). The swing sensing plate (406) is equipped with at least one proximity switch (407) for detecting the rotation angle of the swing shaft (401).

3. The high-frequency melting sample machine according to claim 2, characterized in that: The proximity switch (407) is mounted on the side plate of the proximity switch mounting base (408); the upper part of the side plate of the proximity switch mounting base (408) is provided with a bearing seat hole, and three waist-shaped holes (409) are provided around the upper circumference of the bearing seat hole, which are used to adjust and limit the circumferential position of the proximity switch (407) to limit its sensing range. There are three proximity switches (407), namely the middle proximity switch, the right proximity switch, and the left proximity switch, which are used to realize the origin positioning, positive limit and negative limit of the swing shaft (401).

4. The high-frequency melting sample machine according to claim 1, characterized in that: The induction heating bracket (5) is connected to the swing shaft (401) via a rotating insulating plate (44). The coil (502) body is in the shape of a planar spiral and is used to support the melting crucible holder (503). The melting crucible (501) is placed inside the melting crucible holder (503). The connecting leg (504) of the coil (502) passes through the rotating insulating plate (44) via the connecting joint (505) and is connected to the external high-frequency power supply and cooling water source via the water cable fixing seat (410) and the rotating joint.

5. The high-frequency melting sample machine according to claim 1, characterized in that: The molding assembly (6) is fixedly mounted on the frame shelf (101) by a rectangular fixing plate (601). It includes a molding coil (602), a molding crucible holder (603) fitted over the molding coil (602), and a molding crucible (604) disposed inside the molding crucible holder (603). The molding coil (602) has the same structure as the coil (502). The outer diameter of the molding coil (602) is smaller than the bottom outer diameter of the molding crucible holder (603), so that when the molding crucible holder (603) is fitted over the molding coil (602), its molding crucible holder (603)... The inner wall of the forming coil (602) forms an interference fit with the outer periphery of the forming coil (602). The radial elastic force of the forming coil (602) secures the forming crucible support (603). The forming coil (602) is suspended in front of the first frame plate (101). Its connecting leg (504) passes through the fixing plate (601) through the connecting joint (505) and extends backward. It is connected to the external high-frequency power supply and cooling water source through the water cable fixing seat (410) on the second frame plate (102), so that the cooling water can flow inside the forming coil (602). At the same time, the current generates an alternating magnetic field through the coil.

6. The high-frequency melting sample machine according to claim 1, characterized in that: The melting crucible (501) has two layers of edges. The left and right side walls of the melting crucible (501) are provided with transverse protrusions (506). The edge of the matching melting crucible support (503) and its inner wall are cut with two symmetrical grooves (507). The transverse protrusions (506) and grooves (507) cooperate to restrict the circumferential rotation of the melting crucible (501) in the melting crucible support (503).

7. The high-frequency melting sample machine according to claim 1, characterized in that: The directional cooling device (9) includes a fan (901) and an air duct (902). The air outlet of the air duct (902) is provided with a funnel-shaped air collecting hood (903) for concentrating the cooling airflow to rapidly cool the forming crucible (604).

8. The high-frequency melting sample machine according to claim 1, characterized in that: The exhaust device (10) includes an air collection pipe (1001) and a centrifugal fan (1002). One end of the air collection pipe (1001) is connected to the exhaust port (1003), and the other end is connected to the centrifugal fan (1002) installed on the upper part of the frame body (1).

9. The high-frequency melting sample machine according to claim 1, characterized in that: It also includes a display screen (11), a water-cooled box and a power distribution cabinet (12). The display screen (11) is located in front of the exhaust device (10) and is separated from the exhaust device (10). The water-cooled box and the power distribution cabinet (12) are located on both sides of the frame body (1).

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